from philo.validators import RedirectValidator
from philo.exceptions import ViewCanNotProvideSubpath, ViewDoesNotProvideSubpaths, AncestorDoesNotExist
from philo.signals import view_about_to_render, view_finished_rendering
+from mptt.templatetags.mptt_tags import cache_tree_children
_view_content_type_limiter = ContentTypeSubclassLimiter(None)
except AncestorDoesNotExist, ViewDoesNotExist:
return None
- def get_navigation(self, depth=DEFAULT_NAVIGATION_DEPTH, current_depth=0, found_node_pks=None):
- navigation = self.view.get_navigation(self, depth, current_depth)
+ def get_navigation(self, depth=DEFAULT_NAVIGATION_DEPTH):
+ max_depth = depth + self.get_level()
+ tree = cache_tree_children(self.get_descendants(include_self=True).filter(level__lte=max_depth))
- if depth == current_depth:
- return navigation
- import pdb
- pdb.set_trace()
- found_node_pks = found_node_pks or [self.pk]
- ordered_child_pks = NodeNavigationOverride.objects.filter(parent=self, child__parent=self).values_list('child__pk', flat=True)
-
- children = self.children.exclude(pk__in=found_node_pks)
- ordered_children = children.filter(pk__in=ordered_child_pks)
- unordered_children = children.exclude(pk__in=ordered_child_pks)
-
- children = list(ordered_children) + list(unordered_children)
-
- if children:
- child_navigation = []
- for child in children:
- found_node_pks.append(child.pk)
- try:
- child_navigation.append(child.get_navigation(depth, current_depth + 1, found_node_pks))
- except NotImplementedError:
- pass
+ def get_nav(parent, nodes):
+ node_overrides = dict([(override.child.pk, override) for override in NodeNavigationOverride.objects.filter(parent=parent, child__in=nodes).select_related('child')])
- if child_navigation:
- if 'children' in navigation:
- navigation['children'] += child_navigation
+ navigation_list = []
+ for node in nodes:
+ node._override = node_overrides.get(node.pk, None)
+
+ if node._override:
+ if node._override.hide:
+ continue
+ navigation = node._override.get_navigation(node, max_depth)
else:
- navigation['children'] = child_navigation
+ navigation = node.view.get_navigation(node, max_depth)
+
+ if not node.is_leaf_node() and node.get_level() < max_depth:
+ children = navigation.get('children', [])
+ children += get_nav(node, node.get_children())
+ navigation['children'] = children
+
+ if 'children' in navigation:
+ navigation['children'].sort(cmp=lambda x,y: cmp(x['order'], y['order']))
+
+ navigation_list.append(navigation)
+
+ return navigation_list
+ navigation = get_nav(self.parent, tree)
+ root = navigation[0]
+ navigation = [root] + root['children']
+ del(root['children'])
return navigation
def save(self):
class NodeNavigationOverride(Entity):
- parent = models.ForeignKey(Node, related_name="navigation_override_child_set")
- child = models.OneToOneField(Node, related_name="navigation_override")
- url = models.CharField(max_length=200, validators=[RedirectValidator()], blank=True)
+ parent = models.ForeignKey(Node, related_name="child_navigation_overrides", blank=True, null=True)
+ child = models.ForeignKey(Node, related_name="navigation_overrides")
+
title = models.CharField(max_length=100, blank=True)
+ url = models.CharField(max_length=200, validators=[RedirectValidator()], blank=True)
order = models.PositiveSmallIntegerField(blank=True, null=True)
child_navigation = JSONField()
+ hide = models.BooleanField()
- def get_navigation(self, node, depth, current_depth):
- if self.child_navigation:
- depth = current_depth
- default = node.get_navigation(depth, current_depth)
+ def get_navigation(self, node, max_depth):
+ default = node.view.get_navigation(node, max_depth)
if self.url:
default['url'] = self.url
if self.title:
default['title'] = self.title
- if self.child_navigation:
+ if self.order:
+ default['order'] = self.order
+ if isinstance(self.child_navigation, list) and node.get_level() < max_depth:
+ child_navigation = self.child_navigation[:]
+
+ for child in child_navigation:
+ child['url'] = default['url'] + child['url']
+
if 'children' in default:
+ overridden = set([child['url'] for child in default['children']]) & set([child['url'] for child in self.child_navigation])
+ if overridden:
+ for child in default[:]:
+ if child['url'] in overridden:
+ default.remove(child)
default['children'] += self.child_navigation
else:
default['children'] = self.child_navigation
+ return default
class Meta:
ordering = ['order']
+ unique_together = ('parent', 'child',)
+ app_label = 'philo'
class View(Entity):
def actually_render_to_response(self, request, extra_context=None):
raise NotImplementedError('View subclasses must implement render_to_response.')
- def get_navigation(self, node, depth, current_depth):
+ def get_navigation(self, node, max_depth):
+ """
+ Subclasses should implement get_navigation to support auto-generated navigation.
+ max_depth is the deepest `level` that should be generated; node is the node that
+ is asking for the navigation. This method should return a dictionary of the form:
+ {
+ 'url': url,
+ 'title': title,
+ 'order': order, # None for no ordering.
+ 'children': [ # Optional
+ <similar child navigation dictionaries>
+ ]
+ }
+ """
raise NotImplementedError('View subclasses must implement get_navigation.')
class Meta: